An au pair is an unmarried young adult aged 18 to 30 years, who has no children and travels to a foreign country for a defined period of time to live with a host family. The au pair is considered as a full member of the family during the entire stay. As such, he or she helps the family with childcare and can be asked to assume some light household tasks. In return, the host family provides free board and lodging, as well as pocket money. However, the au pair is neither a housekeeper, nor a nanny.